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Re: Runs rough below 2.0rpm also back cylender has less...
If you've got low compression, more than 10% below the front cylinder, you've probably got a problem somewhere. It could be a broken ring or the rear cam is not properly timed.
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I have one that will shut off pressure when the water supply varies. Check your water tap, make sure all your connections are TIGHT. If not they will suck air and interrupt and pump cycle. Use new hose washers on everything. The engine (mine is Honda) will also buck in response to varying flow demand. It has an auto-close spring/lever to prevent it from overrunning if it loses incoming water. Good luck.
Unless you do your own work take to a reputable technician and have them re scan and change required sensor
the forum below may shed some light on your problem rough idle stalling loss of power
your o2 sensor bank 1 is bad . you may want to replace it. It will probably solve your problem but make sure your maintainance is up to date fuel filters air filter plugs and wires. If this was helpful please leave good feed back
have you replaced the fuel filter. also check the battery new cars use a lot of power and that could cause a random misfire code. if those are all good then check for a vacumm leak. you can do that with carb cleaner by running the vehicle and spraying around the intake manifold or vacumm lines and listen for a change in the motor
If you had a crack in your head you should be losing water inside/outside the engine, the same with a head gasket, check for water running down the outside of block and the exhast for excess water discharge, I know will sould stupid but did you insert the thermostat in the correct way? spring facing downwards?. The only other thing i can think of is if you have a collapsed rubber hose somewhere.
I assume this is a gas motor. MIL on? Any codes? See if the truck runs rough below half tank, but better with a full tank. If no change, there could be contamination in the fuel rail which lands in the tops of the injectors.
you might have a bad fuel pump, try to keep it runing with barke parts cleanerr or carburetor cleaner aplyed to intake and if stays runing then you need a fuel pump, or have some one check your fuel presure, feed back will be apreciated
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